From Longman Dictionary of Contemporary Englishtraitortrai‧tor /ˈtreɪtə $ -ər/ ●○○ noun [countable, uncountable] BETRAYsomeone who is not loyal to their country, friends, or beliefs → treasontraitor to a traitor to the cause of women’s rights a politician who turned traitor (=became a traitor) to the government
Examples from the Corpus
traitor• When he left Nicaragua for the US, he was denounced as a traitor to the revolution.• At the end of the war Mata Hari was hanged as a traitor.• A body could also be a traitor, indulging urges alien to intellect and emotion.• Nobody's suggesting he is a traitor, he's one of our very best men.• His father suffered even more when the revolutionaries decided that he was a traitor and plundered his estate worth ten thousand pounds.• Yet in the first autumn of the war he seemed neither a famous traitor nor an infamous war criminal.• Whether she is victim or traitor remains unknown.• Zaragoza turned traitor when he thought the Republicans would lose the war.• Frequently they were outspoken wives, who were considered monstrous shrews or unnatural traitors to their husbands.• For that's the place where traitors ought to be.traitor to• a traitor to the countryOrigin traitor (1200-1300) Old French traitre, from Latin traditor, from tradere “to hand over, deliver, betray”, from trans- ( → TRANS-) + dare “to give” 